77968980

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{61}}^1\times {\mathrm{263}}^1$

素因数の和:348

約数の個数: 144

約数和(自身を含む): 250233984

約数和(自身を除く): 172265004

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 61, 81, 90, 108, 122, 135, 162, 180, 183, 243, 244, 263, 270, 305, 324, 366, 405, 486, 526, 540, 549, 610, 732, 789, 810, 915, 972, 1052, 1098, 1215, 1220, 1315, 1578, 1620, 1647, 1830, 2196, 2367, 2430, 2630, 2745, 3156, 3294, 3660, 3945, 4734, 4860, 4941, 5260, 5490, 6588, 7101, 7890, 8235, 9468, 9882, 10980, 11835, 14202, 14823, 15780, 16043, 16470, 19764, 21303, 23670, 24705, 28404, 29646, 32086, 32940, 35505, 42606, 47340, 48129, 49410, 59292, 63909, 64172, 71010, 74115, 80215, 85212, 96258, 98820, 106515, 127818, 142020, 144387, 148230, 160430, 192516, 213030, 240645, 255636, 288774, 296460, 319545, 320860, 426060, 433161, 481290, 577548, 639090, 721935, 866322, 962580, 1278180, 1299483, 1443870, 1732644, 2165805, 2598966, 2887740, 3898449, 4331610, 5197932, 6497415, 7796898, 8663220, 12994830, 15593796, 19492245, 25989660, 38984490, 77968980]

約数ペア:

[(1, 77968980), (2, 38984490), (3, 25989660), (4, 19492245), (5, 15593796), (6, 12994830), (9, 8663220), (10, 7796898), (12, 6497415), (15, 5197932), (18, 4331610), (20, 3898449), (27, 2887740), (30, 2598966), (36, 2165805), (45, 1732644), (54, 1443870), (60, 1299483), (61, 1278180), (81, 962580), (90, 866322), (108, 721935), (122, 639090), (135, 577548), (162, 481290), (180, 433161), (183, 426060), (243, 320860), (244, 319545), (263, 296460), (270, 288774), (305, 255636), (324, 240645), (366, 213030), (405, 192516), (486, 160430), (526, 148230), (540, 144387), (549, 142020), (610, 127818), (732, 106515), (789, 98820), (810, 96258), (915, 85212), (972, 80215), (1052, 74115), (1098, 71010), (1215, 64172), (1220, 63909), (1315, 59292), (1578, 49410), (1620, 48129), (1647, 47340), (1830, 42606), (2196, 35505), (2367, 32940), (2430, 32086), (2630, 29646), (2745, 28404), (3156, 24705), (3294, 23670), (3660, 21303), (3945, 19764), (4734, 16470), (4860, 16043), (4941, 15780), (5260, 14823), (5490, 14202), (6588, 11835), (7101, 10980), (7890, 9882), (8235, 9468)]