19978224

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{1607}}^1$

素因数の和:1662

約数の個数: 80

約数和(自身を含む): 60615168

約数和(自身を除く): 40636944

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 37, 42, 48, 56, 74, 84, 111, 112, 148, 168, 222, 259, 296, 336, 444, 518, 592, 777, 888, 1036, 1554, 1607, 1776, 2072, 3108, 3214, 4144, 4821, 6216, 6428, 9642, 11249, 12432, 12856, 19284, 22498, 25712, 33747, 38568, 44996, 59459, 67494, 77136, 89992, 118918, 134988, 178377, 179984, 237836, 269976, 356754, 416213, 475672, 539952, 713508, 832426, 951344, 1248639, 1427016, 1664852, 2497278, 2854032, 3329704, 4994556, 6659408, 9989112, 19978224]

約数ペア:

[(1, 19978224), (2, 9989112), (3, 6659408), (4, 4994556), (6, 3329704), (7, 2854032), (8, 2497278), (12, 1664852), (14, 1427016), (16, 1248639), (21, 951344), (24, 832426), (28, 713508), (37, 539952), (42, 475672), (48, 416213), (56, 356754), (74, 269976), (84, 237836), (111, 179984), (112, 178377), (148, 134988), (168, 118918), (222, 89992), (259, 77136), (296, 67494), (336, 59459), (444, 44996), (518, 38568), (592, 33747), (777, 25712), (888, 22498), (1036, 19284), (1554, 12856), (1607, 12432), (1776, 11249), (2072, 9642), (3108, 6428), (3214, 6216), (4144, 4821)]