638961830

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{15217}}^1$

素因数の和:15273

約数の個数: 64

約数和(自身を含む): 1380576960

約数和(自身を除く): 741615130

約数列:

[1, 2, 5, 10, 13, 17, 19, 26, 34, 38, 65, 85, 95, 130, 170, 190, 221, 247, 323, 442, 494, 646, 1105, 1235, 1615, 2210, 2470, 3230, 4199, 8398, 15217, 20995, 30434, 41990, 76085, 152170, 197821, 258689, 289123, 395642, 517378, 578246, 989105, 1293445, 1445615, 1978210, 2586890, 2891230, 3362957, 3758599, 4915091, 6725914, 7517198, 9830182, 16814785, 18792995, 24575455, 33629570, 37585990, 49150910, 63896183, 127792366, 319480915, 638961830]

約数ペア:

[(1, 638961830), (2, 319480915), (5, 127792366), (10, 63896183), (13, 49150910), (17, 37585990), (19, 33629570), (26, 24575455), (34, 18792995), (38, 16814785), (65, 9830182), (85, 7517198), (95, 6725914), (130, 4915091), (170, 3758599), (190, 3362957), (221, 2891230), (247, 2586890), (323, 1978210), (442, 1445615), (494, 1293445), (646, 989105), (1105, 578246), (1235, 517378), (1615, 395642), (2210, 289123), (2470, 258689), (3230, 197821), (4199, 152170), (8398, 76085), (15217, 41990), (20995, 30434)]