19991790

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2441}}^1$

素因数の和:2474

約数の個数: 96

約数和(自身を含む): 63999936

約数和(自身を除く): 44008146

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 13, 14, 15, 18, 21, 26, 30, 35, 39, 42, 45, 63, 65, 70, 78, 90, 91, 105, 117, 126, 130, 182, 195, 210, 234, 273, 315, 390, 455, 546, 585, 630, 819, 910, 1170, 1365, 1638, 2441, 2730, 4095, 4882, 7323, 8190, 12205, 14646, 17087, 21969, 24410, 31733, 34174, 36615, 43938, 51261, 63466, 73230, 85435, 95199, 102522, 109845, 153783, 158665, 170870, 190398, 219690, 222131, 256305, 285597, 307566, 317330, 444262, 475995, 512610, 571194, 666393, 768915, 951990, 1110655, 1332786, 1427985, 1537830, 1999179, 2221310, 2855970, 3331965, 3998358, 6663930, 9995895, 19991790]

約数ペア:

[(1, 19991790), (2, 9995895), (3, 6663930), (5, 3998358), (6, 3331965), (7, 2855970), (9, 2221310), (10, 1999179), (13, 1537830), (14, 1427985), (15, 1332786), (18, 1110655), (21, 951990), (26, 768915), (30, 666393), (35, 571194), (39, 512610), (42, 475995), (45, 444262), (63, 317330), (65, 307566), (70, 285597), (78, 256305), (90, 222131), (91, 219690), (105, 190398), (117, 170870), (126, 158665), (130, 153783), (182, 109845), (195, 102522), (210, 95199), (234, 85435), (273, 73230), (315, 63466), (390, 51261), (455, 43938), (546, 36615), (585, 34174), (630, 31733), (819, 24410), (910, 21969), (1170, 17087), (1365, 14646), (1638, 12205), (2441, 8190), (2730, 7323), (4095, 4882)]