19917396

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{787}}^1$

素因数の和:853

約数の個数: 72

約数和(自身を含む): 54498080

約数和(自身を除く): 34580684

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 37, 38, 57, 74, 76, 111, 114, 148, 171, 222, 228, 333, 342, 444, 666, 684, 703, 787, 1332, 1406, 1574, 2109, 2361, 2812, 3148, 4218, 4722, 6327, 7083, 8436, 9444, 12654, 14166, 14953, 25308, 28332, 29119, 29906, 44859, 58238, 59812, 87357, 89718, 116476, 134577, 174714, 179436, 262071, 269154, 349428, 524142, 538308, 553261, 1048284, 1106522, 1659783, 2213044, 3319566, 4979349, 6639132, 9958698, 19917396]

約数ペア:

[(1, 19917396), (2, 9958698), (3, 6639132), (4, 4979349), (6, 3319566), (9, 2213044), (12, 1659783), (18, 1106522), (19, 1048284), (36, 553261), (37, 538308), (38, 524142), (57, 349428), (74, 269154), (76, 262071), (111, 179436), (114, 174714), (148, 134577), (171, 116476), (222, 89718), (228, 87357), (333, 59812), (342, 58238), (444, 44859), (666, 29906), (684, 29119), (703, 28332), (787, 25308), (1332, 14953), (1406, 14166), (1574, 12654), (2109, 9444), (2361, 8436), (2812, 7083), (3148, 6327), (4218, 4722)]