19463980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1$

素因数の和:199

約数の個数: 96

約数和(自身を含む): 47900160

約数和(自身を除く): 28436180

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 23, 34, 38, 46, 68, 76, 85, 92, 95, 115, 131, 170, 190, 230, 262, 323, 340, 380, 391, 437, 460, 524, 646, 655, 782, 874, 1292, 1310, 1564, 1615, 1748, 1955, 2185, 2227, 2489, 2620, 3013, 3230, 3910, 4370, 4454, 4978, 6026, 6460, 7429, 7820, 8740, 8908, 9956, 11135, 12052, 12445, 14858, 15065, 22270, 24890, 29716, 30130, 37145, 42313, 44540, 49780, 51221, 57247, 60260, 74290, 84626, 102442, 114494, 148580, 169252, 204884, 211565, 228988, 256105, 286235, 423130, 512210, 572470, 846260, 973199, 1024420, 1144940, 1946398, 3892796, 4865995, 9731990, 19463980]

約数ペア:

[(1, 19463980), (2, 9731990), (4, 4865995), (5, 3892796), (10, 1946398), (17, 1144940), (19, 1024420), (20, 973199), (23, 846260), (34, 572470), (38, 512210), (46, 423130), (68, 286235), (76, 256105), (85, 228988), (92, 211565), (95, 204884), (115, 169252), (131, 148580), (170, 114494), (190, 102442), (230, 84626), (262, 74290), (323, 60260), (340, 57247), (380, 51221), (391, 49780), (437, 44540), (460, 42313), (524, 37145), (646, 30130), (655, 29716), (782, 24890), (874, 22270), (1292, 15065), (1310, 14858), (1564, 12445), (1615, 12052), (1748, 11135), (1955, 9956), (2185, 8908), (2227, 8740), (2489, 7820), (2620, 7429), (3013, 6460), (3230, 6026), (3910, 4978), (4370, 4454)]