490220900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{223}}^1$

素因数の和:358

約数の個数: 144

約数和(自身を含む): 1224921600

約数和(自身を除く): 734700700

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 25, 26, 38, 50, 52, 65, 76, 89, 95, 100, 130, 178, 190, 223, 247, 260, 325, 356, 380, 445, 446, 475, 494, 650, 890, 892, 950, 988, 1115, 1157, 1235, 1300, 1691, 1780, 1900, 2225, 2230, 2314, 2470, 2899, 3382, 4237, 4450, 4460, 4628, 4940, 5575, 5785, 5798, 6175, 6764, 8455, 8474, 8900, 11150, 11570, 11596, 12350, 14495, 16910, 16948, 19847, 21185, 21983, 22300, 23140, 24700, 28925, 28990, 33820, 39694, 42275, 42370, 43966, 55081, 57850, 57980, 72475, 79388, 84550, 84740, 87932, 99235, 105925, 109915, 110162, 115700, 144950, 169100, 198470, 211850, 219830, 220324, 258011, 275405, 289900, 377093, 396940, 423700, 439660, 496175, 516022, 549575, 550810, 754186, 992350, 1032044, 1099150, 1101620, 1290055, 1377025, 1508372, 1885465, 1984700, 2198300, 2580110, 2754050, 3770930, 4902209, 5160220, 5508100, 6450275, 7541860, 9427325, 9804418, 12900550, 18854650, 19608836, 24511045, 25801100, 37709300, 49022090, 98044180, 122555225, 245110450, 490220900]

約数ペア:

[(1, 490220900), (2, 245110450), (4, 122555225), (5, 98044180), (10, 49022090), (13, 37709300), (19, 25801100), (20, 24511045), (25, 19608836), (26, 18854650), (38, 12900550), (50, 9804418), (52, 9427325), (65, 7541860), (76, 6450275), (89, 5508100), (95, 5160220), (100, 4902209), (130, 3770930), (178, 2754050), (190, 2580110), (223, 2198300), (247, 1984700), (260, 1885465), (325, 1508372), (356, 1377025), (380, 1290055), (445, 1101620), (446, 1099150), (475, 1032044), (494, 992350), (650, 754186), (890, 550810), (892, 549575), (950, 516022), (988, 496175), (1115, 439660), (1157, 423700), (1235, 396940), (1300, 377093), (1691, 289900), (1780, 275405), (1900, 258011), (2225, 220324), (2230, 219830), (2314, 211850), (2470, 198470), (2899, 169100), (3382, 144950), (4237, 115700), (4450, 110162), (4460, 109915), (4628, 105925), (4940, 99235), (5575, 87932), (5785, 84740), (5798, 84550), (6175, 79388), (6764, 72475), (8455, 57980), (8474, 57850), (8900, 55081), (11150, 43966), (11570, 42370), (11596, 42275), (12350, 39694), (14495, 33820), (16910, 28990), (16948, 28925), (19847, 24700), (21185, 23140), (21983, 22300)]