28531620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1$

素因数の和:254

約数の個数: 144

約数和(自身を含む): 94938480

約数和(自身を除く): 66406860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 89, 90, 117, 130, 137, 156, 178, 180, 195, 234, 260, 267, 274, 356, 390, 411, 445, 468, 534, 548, 585, 685, 780, 801, 822, 890, 1068, 1157, 1170, 1233, 1335, 1370, 1602, 1644, 1780, 1781, 2055, 2314, 2340, 2466, 2670, 2740, 3204, 3471, 3562, 4005, 4110, 4628, 4932, 5340, 5343, 5785, 6165, 6942, 7124, 8010, 8220, 8905, 10413, 10686, 11570, 12193, 12330, 13884, 16020, 16029, 17355, 17810, 20826, 21372, 23140, 24386, 24660, 26715, 32058, 34710, 35620, 36579, 41652, 48772, 52065, 53430, 60965, 64116, 69420, 73158, 80145, 104130, 106860, 109737, 121930, 146316, 158509, 160290, 182895, 208260, 219474, 243860, 317018, 320580, 365790, 438948, 475527, 548685, 634036, 731580, 792545, 951054, 1097370, 1426581, 1585090, 1902108, 2194740, 2377635, 2853162, 3170180, 4755270, 5706324, 7132905, 9510540, 14265810, 28531620]

約数ペア:

[(1, 28531620), (2, 14265810), (3, 9510540), (4, 7132905), (5, 5706324), (6, 4755270), (9, 3170180), (10, 2853162), (12, 2377635), (13, 2194740), (15, 1902108), (18, 1585090), (20, 1426581), (26, 1097370), (30, 951054), (36, 792545), (39, 731580), (45, 634036), (52, 548685), (60, 475527), (65, 438948), (78, 365790), (89, 320580), (90, 317018), (117, 243860), (130, 219474), (137, 208260), (156, 182895), (178, 160290), (180, 158509), (195, 146316), (234, 121930), (260, 109737), (267, 106860), (274, 104130), (356, 80145), (390, 73158), (411, 69420), (445, 64116), (468, 60965), (534, 53430), (548, 52065), (585, 48772), (685, 41652), (780, 36579), (801, 35620), (822, 34710), (890, 32058), (1068, 26715), (1157, 24660), (1170, 24386), (1233, 23140), (1335, 21372), (1370, 20826), (1602, 17810), (1644, 17355), (1780, 16029), (1781, 16020), (2055, 13884), (2314, 12330), (2340, 12193), (2466, 11570), (2670, 10686), (2740, 10413), (3204, 8905), (3471, 8220), (3562, 8010), (4005, 7124), (4110, 6942), (4628, 6165), (4932, 5785), (5340, 5343)]