30720280

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{373}}^1$

素因数の和:484

約数の個数: 64

約数和(自身を含む): 72705600

約数和(自身を除く): 41985320

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 71, 116, 142, 145, 232, 284, 290, 355, 373, 568, 580, 710, 746, 1160, 1420, 1492, 1865, 2059, 2840, 2984, 3730, 4118, 7460, 8236, 10295, 10817, 14920, 16472, 20590, 21634, 26483, 41180, 43268, 52966, 54085, 82360, 86536, 105932, 108170, 132415, 211864, 216340, 264830, 432680, 529660, 768007, 1059320, 1536014, 3072028, 3840035, 6144056, 7680070, 15360140, 30720280]

約数ペア:

[(1, 30720280), (2, 15360140), (4, 7680070), (5, 6144056), (8, 3840035), (10, 3072028), (20, 1536014), (29, 1059320), (40, 768007), (58, 529660), (71, 432680), (116, 264830), (142, 216340), (145, 211864), (232, 132415), (284, 108170), (290, 105932), (355, 86536), (373, 82360), (568, 54085), (580, 52966), (710, 43268), (746, 41180), (1160, 26483), (1420, 21634), (1492, 20590), (1865, 16472), (2059, 14920), (2840, 10817), (2984, 10295), (3730, 8236), (4118, 7460)]