19588900

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:205

約数の個数: 72

約数和(自身を含む): 44997120

約数和(自身を除く): 25408220

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 71, 89, 100, 124, 142, 155, 178, 284, 310, 355, 356, 445, 620, 710, 775, 890, 1420, 1550, 1775, 1780, 2201, 2225, 2759, 3100, 3550, 4402, 4450, 5518, 6319, 7100, 8804, 8900, 11005, 11036, 12638, 13795, 22010, 25276, 27590, 31595, 44020, 55025, 55180, 63190, 68975, 110050, 126380, 137950, 157975, 195889, 220100, 275900, 315950, 391778, 631900, 783556, 979445, 1958890, 3917780, 4897225, 9794450, 19588900]

約数ペア:

[(1, 19588900), (2, 9794450), (4, 4897225), (5, 3917780), (10, 1958890), (20, 979445), (25, 783556), (31, 631900), (50, 391778), (62, 315950), (71, 275900), (89, 220100), (100, 195889), (124, 157975), (142, 137950), (155, 126380), (178, 110050), (284, 68975), (310, 63190), (355, 55180), (356, 55025), (445, 44020), (620, 31595), (710, 27590), (775, 25276), (890, 22010), (1420, 13795), (1550, 12638), (1775, 11036), (1780, 11005), (2201, 8900), (2225, 8804), (2759, 7100), (3100, 6319), (3550, 5518), (4402, 4450)]