128903880

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{153457}}^1$

素因数の和:153478

約数の個数: 64

約数和(自身を含む): 441959040

約数和(自身を除く): 313055160

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 153457, 306914, 460371, 613828, 767285, 920742, 1074199, 1227656, 1534570, 1841484, 2148398, 2301855, 3069140, 3222597, 3682968, 4296796, 4603710, 5370995, 6138280, 6445194, 8593592, 9207420, 10741990, 12890388, 16112985, 18414840, 21483980, 25780776, 32225970, 42967960, 64451940, 128903880]

約数ペア:

[(1, 128903880), (2, 64451940), (3, 42967960), (4, 32225970), (5, 25780776), (6, 21483980), (7, 18414840), (8, 16112985), (10, 12890388), (12, 10741990), (14, 9207420), (15, 8593592), (20, 6445194), (21, 6138280), (24, 5370995), (28, 4603710), (30, 4296796), (35, 3682968), (40, 3222597), (42, 3069140), (56, 2301855), (60, 2148398), (70, 1841484), (84, 1534570), (105, 1227656), (120, 1074199), (140, 920742), (168, 767285), (210, 613828), (280, 460371), (420, 306914), (840, 153457)]