21638340

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{19}}^2\times {\mathrm{37}}^1$

素因数の和:96

約数の個数: 180

約数和(自身を含む): 73577196

約数和(自身を除く): 51938856

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 27, 30, 36, 37, 38, 45, 54, 57, 60, 74, 76, 81, 90, 95, 108, 111, 114, 135, 148, 162, 171, 180, 185, 190, 222, 228, 270, 285, 324, 333, 342, 361, 370, 380, 405, 444, 513, 540, 555, 570, 666, 684, 703, 722, 740, 810, 855, 999, 1026, 1083, 1110, 1140, 1332, 1406, 1444, 1539, 1620, 1665, 1710, 1805, 1998, 2052, 2109, 2166, 2220, 2565, 2812, 2997, 3078, 3249, 3330, 3420, 3515, 3610, 3996, 4218, 4332, 4995, 5130, 5415, 5994, 6156, 6327, 6498, 6660, 7030, 7220, 7695, 8436, 9747, 9990, 10260, 10545, 10830, 11988, 12654, 12996, 13357, 14060, 14985, 15390, 16245, 18981, 19494, 19980, 21090, 21660, 25308, 26714, 29241, 29970, 30780, 31635, 32490, 37962, 38988, 40071, 42180, 48735, 53428, 56943, 58482, 59940, 63270, 64980, 66785, 75924, 80142, 94905, 97470, 113886, 116964, 120213, 126540, 133570, 146205, 160284, 189810, 194940, 200355, 227772, 240426, 267140, 284715, 292410, 360639, 379620, 400710, 480852, 569430, 584820, 601065, 721278, 801420, 1081917, 1138860, 1202130, 1442556, 1803195, 2163834, 2404260, 3606390, 4327668, 5409585, 7212780, 10819170, 21638340]

約数ペア:

[(1, 21638340), (2, 10819170), (3, 7212780), (4, 5409585), (5, 4327668), (6, 3606390), (9, 2404260), (10, 2163834), (12, 1803195), (15, 1442556), (18, 1202130), (19, 1138860), (20, 1081917), (27, 801420), (30, 721278), (36, 601065), (37, 584820), (38, 569430), (45, 480852), (54, 400710), (57, 379620), (60, 360639), (74, 292410), (76, 284715), (81, 267140), (90, 240426), (95, 227772), (108, 200355), (111, 194940), (114, 189810), (135, 160284), (148, 146205), (162, 133570), (171, 126540), (180, 120213), (185, 116964), (190, 113886), (222, 97470), (228, 94905), (270, 80142), (285, 75924), (324, 66785), (333, 64980), (342, 63270), (361, 59940), (370, 58482), (380, 56943), (405, 53428), (444, 48735), (513, 42180), (540, 40071), (555, 38988), (570, 37962), (666, 32490), (684, 31635), (703, 30780), (722, 29970), (740, 29241), (810, 26714), (855, 25308), (999, 21660), (1026, 21090), (1083, 19980), (1110, 19494), (1140, 18981), (1332, 16245), (1406, 15390), (1444, 14985), (1539, 14060), (1620, 13357), (1665, 12996), (1710, 12654), (1805, 11988), (1998, 10830), (2052, 10545), (2109, 10260), (2166, 9990), (2220, 9747), (2565, 8436), (2812, 7695), (2997, 7220), (3078, 7030), (3249, 6660), (3330, 6498), (3420, 6327), (3515, 6156), (3610, 5994), (3996, 5415), (4218, 5130), (4332, 4995)]