38545900

素因数分解:

$2^2\times 5^2\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:235

約数の個数: 72

約数和(自身を含む): 87181920

約数和(自身を除く): 48636020

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 61, 71, 89, 100, 122, 142, 178, 244, 284, 305, 355, 356, 445, 610, 710, 890, 1220, 1420, 1525, 1775, 1780, 2225, 3050, 3550, 4331, 4450, 5429, 6100, 6319, 7100, 8662, 8900, 10858, 12638, 17324, 21655, 21716, 25276, 27145, 31595, 43310, 54290, 63190, 86620, 108275, 108580, 126380, 135725, 157975, 216550, 271450, 315950, 385459, 433100, 542900, 631900, 770918, 1541836, 1927295, 3854590, 7709180, 9636475, 19272950, 38545900]

約数ペア:

[(1, 38545900), (2, 19272950), (4, 9636475), (5, 7709180), (10, 3854590), (20, 1927295), (25, 1541836), (50, 770918), (61, 631900), (71, 542900), (89, 433100), (100, 385459), (122, 315950), (142, 271450), (178, 216550), (244, 157975), (284, 135725), (305, 126380), (355, 108580), (356, 108275), (445, 86620), (610, 63190), (710, 54290), (890, 43310), (1220, 31595), (1420, 27145), (1525, 25276), (1775, 21716), (1780, 21655), (2225, 17324), (3050, 12638), (3550, 10858), (4331, 8900), (4450, 8662), (5429, 7100), (6100, 6319)]