399544651760

素因数分解:

$2^4\times 5^1\times {\mathrm{127}}^1\times {\mathrm{3499}}^1\times {\mathrm{11239}}^1$

素因数の和:14878

約数の個数: 80

約数和(自身を含む): 936606720000

約数和(自身を除く): 537062068240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 127, 254, 508, 635, 1016, 1270, 2032, 2540, 3499, 5080, 6998, 10160, 11239, 13996, 17495, 22478, 27992, 34990, 44956, 55984, 56195, 69980, 89912, 112390, 139960, 179824, 224780, 279920, 444373, 449560, 888746, 899120, 1427353, 1777492, 2221865, 2854706, 3554984, 4443730, 5709412, 7109968, 7136765, 8887460, 11418824, 14273530, 17774920, 22837648, 28547060, 35549840, 39325261, 57094120, 78650522, 114188240, 157301044, 196626305, 314602088, 393252610, 629204176, 786505220, 1573010440, 3146020880, 4994308147, 9988616294, 19977232588, 24971540735, 39954465176, 49943081470, 79908930352, 99886162940, 199772325880, 399544651760]

約数ペア:

[(1, 399544651760), (2, 199772325880), (4, 99886162940), (5, 79908930352), (8, 49943081470), (10, 39954465176), (16, 24971540735), (20, 19977232588), (40, 9988616294), (80, 4994308147), (127, 3146020880), (254, 1573010440), (508, 786505220), (635, 629204176), (1016, 393252610), (1270, 314602088), (2032, 196626305), (2540, 157301044), (3499, 114188240), (5080, 78650522), (6998, 57094120), (10160, 39325261), (11239, 35549840), (13996, 28547060), (17495, 22837648), (22478, 17774920), (27992, 14273530), (34990, 11418824), (44956, 8887460), (55984, 7136765), (56195, 7109968), (69980, 5709412), (89912, 4443730), (112390, 3554984), (139960, 2854706), (179824, 2221865), (224780, 1777492), (279920, 1427353), (444373, 899120), (449560, 888746)]