28724580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{227}}^1$

素因数の和:298

約数の個数: 144

約数和(自身を含む): 94610880

約数和(自身を除く): 65886300

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 37, 38, 45, 57, 60, 74, 76, 90, 95, 111, 114, 148, 171, 180, 185, 190, 222, 227, 228, 285, 333, 342, 370, 380, 444, 454, 555, 570, 666, 681, 684, 703, 740, 855, 908, 1110, 1135, 1140, 1332, 1362, 1406, 1665, 1710, 2043, 2109, 2220, 2270, 2724, 2812, 3330, 3405, 3420, 3515, 4086, 4218, 4313, 4540, 6327, 6660, 6810, 7030, 8172, 8399, 8436, 8626, 10215, 10545, 12654, 12939, 13620, 14060, 16798, 17252, 20430, 21090, 21565, 25197, 25308, 25878, 31635, 33596, 38817, 40860, 41995, 42180, 43130, 50394, 51756, 63270, 64695, 75591, 77634, 83990, 86260, 100788, 125985, 126540, 129390, 151182, 155268, 159581, 167980, 194085, 251970, 258780, 302364, 319162, 377955, 388170, 478743, 503940, 638324, 755910, 776340, 797905, 957486, 1436229, 1511820, 1595810, 1914972, 2393715, 2872458, 3191620, 4787430, 5744916, 7181145, 9574860, 14362290, 28724580]

約数ペア:

[(1, 28724580), (2, 14362290), (3, 9574860), (4, 7181145), (5, 5744916), (6, 4787430), (9, 3191620), (10, 2872458), (12, 2393715), (15, 1914972), (18, 1595810), (19, 1511820), (20, 1436229), (30, 957486), (36, 797905), (37, 776340), (38, 755910), (45, 638324), (57, 503940), (60, 478743), (74, 388170), (76, 377955), (90, 319162), (95, 302364), (111, 258780), (114, 251970), (148, 194085), (171, 167980), (180, 159581), (185, 155268), (190, 151182), (222, 129390), (227, 126540), (228, 125985), (285, 100788), (333, 86260), (342, 83990), (370, 77634), (380, 75591), (444, 64695), (454, 63270), (555, 51756), (570, 50394), (666, 43130), (681, 42180), (684, 41995), (703, 40860), (740, 38817), (855, 33596), (908, 31635), (1110, 25878), (1135, 25308), (1140, 25197), (1332, 21565), (1362, 21090), (1406, 20430), (1665, 17252), (1710, 16798), (2043, 14060), (2109, 13620), (2220, 12939), (2270, 12654), (2724, 10545), (2812, 10215), (3330, 8626), (3405, 8436), (3420, 8399), (3515, 8172), (4086, 7030), (4218, 6810), (4313, 6660), (4540, 6327)]